2 years ago

The sum of three times a number and 10 is 31.Find the number.

1 answer:

4 0

Answer:

Step-by-step explanation:

Let the number be n.

$3n+10=31$

Subtract 10 from both sides:

$3n+10-10=31-10$

$3n=21$

Divide both sides by 3:

$\frac{3n}{3}=\frac{21}{3}$

$n=7$

You might be interested in

damaskus [11]

Yes because 20% is the same as 10%*2

5 0

2 years ago

NARA [144]

It is 138 who won the know that

5 0

3 years ago

anygoal [31]

A mercantilism system sought to enrich the country by restraining imports and encouraging exports. So I believe ur answer is gonna be B.

3 0

2 years ago

OleMash [197]

Answer:

Its A: Mean

Step-by-step explanation:

Mean means average in a set of data

8 0

2 years ago

NikAS [45]

Answer:

In this set of data there is no outlier, as all numbers are relatively close.

4 0

3 years ago